Home / 12,721,407.12-17,555,528.52-6,920,175

Finding the Fourth Proportional to 12,721,407.12, 17,555,528.52 and 6,920,175

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Solution

The fourth proportional to 12,721,407.12, 17,555,528.52 and 6,920,175 is: 9,549,834.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721,407.12 : 17,555,528.52 = 6,920,175 : x
  2. Step 2: Convert to fraction form
    12,721,407.12/17,555,528.52 = 6,920,175/x
  3. Step 3: Cross multiply
    12,721,407.12x = 17,555,528.52 × 6,920,175
  4. Step 4: Simplify right side
    12,721,407.12x = 121,487,329,575,891
  5. Step 5: Solve for x
    x = 121,487,329,575,891/12,721,407.12
  6. Step 6: Final answer
    x = 9,549,834.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.